<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <input type="text" style="width: 800px; height: 200px; font-size: 180px;">
    <script>
        /*
           键盘事件：
               1.keyup:键盘弹起触发。
               2.keydown:键盘按下，一直触发
               3.keypress:键盘按下，一直触发
               4.keypress:不能触发功能键。
        */
       document.addEventListener('keyup', function () {
           console.log('-------------keyup-------------');
       });
       document.addEventListener('keydown', function () {
           console.log('-------------keydown-------------');
       });
       document.addEventListener('keypress', function () {
           console.log('-------------keypress-------------');
       });
    </script>
</body>
</html>